Marquise|Natural|GIA

1.21ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 2557996942

Certificate GIA 2557996942

Diamond specifications and retailer prices

From $4,075 USD
£3,209 GBP
As of October 28, 2026
Save $385 USD (9%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,164 USD at NZ Jewellers · As of October 11, 2026
View at NZ Jewellers

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557996942. Listed at 11 retailers as of October 28, 2026, with a relatively tight 9% spread, which is unusual at this carat range and suggests competitive pricing across the listings. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.21
Carat
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557996942
Dimensions10.94 × 5.48 × 3.38 mm
L/W Ratio2.00
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Natural
Top View
10.94 mm5.48 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557996942
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 28
Current: $7,303 USD|Low: $3,012 USD|High: $7,303 USD|Avg: $4,488 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 28, 2026
Retailer 13$3,046 USD
Retailer 12$3,106 USD
Retailer 3$3,796 USD
Retailer 4$3,874 USD
Retailer 14$3,915 USD
Retailer 10$4,061 USD
Retailer 8$4,075 USD
Retailer 6$4,165 USD
Retailer 2$4,320 USD
Retailer 9$4,320 USD
Retailer 7$4,460 USD
Retailer 5$4,466 USD
Retailer 11$6,951 USD
NZ Jewellers$7,303 USD

23 data points across 14 retailers

11 retailers$4,075 USD to $4,460 USD

Retailer 1
-
$3,046 USD
HK$23,800 HKD
Price last confirmed 19 days ago
Retailer 2
-
$3,874 USD
SGD 5,235 SGD
View
Price last confirmed 18 days ago
B
Retailer 3
-
$4,075 USD
£3,209 GBP
View
Retailer 4
-
$4,112 USD
View
Price last confirmed 23 days ago
Retailer 5
-
$4,192 USD
View
Price last confirmed 41 days ago
B
Retailer 6
-
$4,320 USD
View
B
Retailer 7
-
$4,320 USD
View
B
Retailer 8
-
$4,460 USD
View
Retailer 9
-
$4,466 USD
A$6,871 AUD
View
Price last confirmed 29 days ago
Retailer 10
-
$6,951 USD
£5,473 GBP
View
Price last confirmed 18 days ago
Most Expensive
NZ Jewellers
eda3eb4f-f7ee-4723-a2b5-f762ef6e9a70 · Oct 11
$7,164 USD
View
Price last confirmed 22 days ago
10 more retailers have this diamond
Prices start from $4,075 USDSave up to $385 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.21ct Marquise
$4,075 USD